Nanoparticle anisotropy induces sphere-to-cylinder phase transition in block copolymer melts.
Soft Matter
; 18(19): 3638-3643, 2022 May 18.
Article
en En
| MEDLINE
| ID: mdl-35514297
ABSTRACT
Block copolymer nanocomposites including anisotropic nanoparticles have been previously found to co-assemble into complex structures with nanoparticle alignment. Anisotropic nanoparticles with large aspect ratios are found to modify the morphology of block copolymers at modest concentrations, inducing a sphere-to-cylinder phase transition by breaking the local symmetry in the vicinity of a solid particle. This transition takes place over a wide range of NP lengths comparable with the BCP spacing. Controlling the orientation of uniaxial nanoparticles provides additional control over the global orientation of the block copolymer, as previously reported by experiments.
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01-internacional
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MEDLINE
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En
Revista:
Soft Matter
Año:
2022
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Article
País de afiliación:
Suiza